Question: When did Luigi Cherubini start holding the position as directors of higher national conservatories of music, dance and drama in France?
Paraphrase: On what date(s) did Luigi Cherubini become the director of the French higher national conservatories of music, dance, and drama?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q20721 p:P39 ?s . ?s ps:P39 wd:Q3248992 . ?s pq:P580 ?value}